<template>
	<view v-if="goods_info.goods_name" class="goods-detail-container ">
		<!-- 图片轮播 -->
		<swiper 
		:indicator-dots="true"
		:autoplay="true"
		:interval="3000"
		:duration="1000"
		:circular="true"
		>
		<swiper-item 
		v-for="(item,i) in goods_info.pics" 
		:key="i"
		>
		<image :src="item.pics_big" @click="preview(i)"></image>
		</swiper-item>
		</swiper>
		<!-- 商品信息 -->
		<view class="goods-info-box ">
			<!-- 价格 -->
			<view class="price">
				￥{{goods_info.goods_price}}
			</view>
			<!-- 信息主体 -->
			<view class="goods-info-body">
				<!-- 名称 -->
				<view class="goods-name">
					{{goods_info.goods_name}}
				</view>
				<!-- 收藏 -->
				<view class="favi">
					<uni-icons type="star" size="18" color="gray"></uni-icons>
					<text>收藏</text>
					
				</view>
				
			</view>
			<!-- 运费 -->
			<view class="yf">
				快递：免运费
			</view>
			<!-- 商品详情信息 -->
			<rich-text :nodes="goods_info.goods_introduce"></rich-text>
		</view>
		<!-- 商品导航组件 -->
		<view class="goods_nav">
			  <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />

		</view>
		
		
	</view>
</template>

<script>
	import {mapMutations,mapGetters} from 'vuex'
	export default {
		data() {
			return {
				// 购物详情
				goods_info: {},
				// 左侧按钮组的配置对象
				options:[
					{
						icon:'shop',
						text:'店铺'
					},
					{
						icon:'cart',
						text:'购物车',
						info:0
					}
				],
				// 右侧按钮
				buttonGroup:[
					{
						text:'加入购物车',
						backgroundColor:'#ff0000',
						color:'#fff'
					},
					{
						text:'立即购买',
						backgroundColor:'#ffa200',
						color:'#fff'
						
					}
				]
				
				
			};
		},
		// 计算
		computed: {
			...mapGetters('m_cart', ['total']),
			
		},
		onLoad(options){
			// 获取商品ID
			const goods_id = options.goods_id
			// 请求商品的详情数据
			this.getGoodsDetail(goods_id)
		
		},
		watch:{
			total:{
				handler(newVal){
					const findResult = this.options.find((x) => x.text === '购物车')
					if (findResult) {
						findResult.info = newVal
						
					}		
				},
				immediate:true
				
			}
			
		},
		methods:{
			...mapMutations('m_cart', ['addToCart']),
			async getGoodsDetail(goods_id) {
				const {data:res} = await uni.$http.get('/api/public/v1/goods/detail', { goods_id })
				if (res.meta.status !== 200) return uni.$showMsg()
				res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ').replace(/webp/g, 'jpg')

				// 赋值
				this.goods_info = res.message
				
			},
			// 实现轮播图额预览效果
			preview(i) {
				uni.previewImage({
					// 预览时默认图片的索引
					current:i,
					// 所有图片的url地址的数组
					urls:this.goods_info.pics.map(x=>x.pics_big)
				})		
			},
			// 左侧事件
			onClick(e) {
				if (e.content.text == '购物车') {
					uni.switchTab(
						{
							url:'/pages/cart/cart'
						}	
					)
				}
			},
			// 右侧事件
			buttonClick(e) {
				if (e.content.text === '加入购物车') {
					// 2. 组织一个商品的信息对象
				  const goods = {
					  goods_id: this.goods_info.goods_id,
					  goods_name: this.goods_info.goods_name,
					  goods_price: this.goods_info.goods_price,
					  goods_count: 1,
					  goods_small_logo: this.goods_info.goods_small_logo,
					  
					  goods_state: true   
					  
				  }

				  // 3. 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
				  this.addToCart(goods)
				}
				
			}
			
			
			
		}
	}
</script>

<style lang="scss">
	swiper {
		height: 750rpx;
		image {
			width: 100%;
			height: 100%;
		}
	}
	.goods-info-box {
		padding: 10px;
		padding-right: 0;
		.price {
			color: #c00000;
			font-size: 18px;
			margin: 10px 0;
		}
		
		.goods-info-body {
			display: flex;
			justify-content: space-between;
			.goods-name {
				font-size: 13px;
				padding-right: 10px;
			}
			.favi {
				width: 120px;
				font-size: 12px;
				display: flex;
				flex-direction: column;
				justify-content: center;
				align-items: center;
			    border-left: 1px solid #efefef;
				color: gray;

				
			}
		}
		
	}
	.yf {
		margin: 10px 0;
		font-size: 12px;
		color: gray;
	}
	
	.goods-detail-container {
	  // 给页面外层的容器，添加 50px 的内padding，
	  // 防止页面内容被底部的商品导航组件遮盖
	  padding-bottom: 50px;
	}
	
	.goods_nav {
		position: fixed;
		bottom: 0;
		left: 0;
		width: 100%;
	}


</style>
